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MFS 25
TOHATSU MFS 25 Manuals
Manuals and User Guides for TOHATSU MFS 25. We have
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TOHATSU MFS 25 manuals available for free PDF download: Service Manual, Owner's Manual
TOHATSU MFS 25 Service Manual (319 pages)
Brand:
TOHATSU
| Category:
Outboard Motor
| Size: 17.21 MB
Table of Contents
1.Service Information
5
Service Information
4
Table of Contents
5
Identification (Engine Serial Number)
12
Securing of Work Safety
12
Fire Prevention
12
Ventilation
12
Protection
12
Genuine Parts
12
Tools
13
Recommendations on Service
13
Cautions in Disassembling and Assembling Components
14
Tools and Instruments
15
Test Propeller
15
Measuring Instruments
15
List of Special Tool
16
Pre-Delivery Inspection
20
Steering Handle
20
Gear Shift
20
Engine Oil
20
Gear Oil
20
Fuel Line
21
Rigging
21
Inspection of PTT Unit
21
Inspection of Gas Shock Absorber
21
Inspection of Starting Switch and Stop Switch
22
Cooling Water Check Port
23
Idling
23
Propeller Selection
23
Trim Tab
24
Break-In Operation
24
Test Run
25
Checks after Test Run
25
Service Data
27
Outline Dimensions
28
Engine Dimensions
28
Transom Bolts
29
Fuel Injection System
30
ECU Fuel Feed System
30
Engine Lubrication System Diagram
31
Cooling Water System Diagram
32
Specifications
33
Maintenance Data
36
Tightening Torque Data
44
Sealant Application Locations
46
Maintenance
49
Special Tool
50
Inspection Schedule
51
Inspection Items
51
Inspection of Top Cowl
52
Inspection of Fuel System Piping
52
Inspection Items
52
Inspection of Fuel Tank
53
Inspection of Fuel Filter
53
Replacement of Engine Oil
54
Replacement of Oil Filter
55
Inspection of Gear Oil Quantity
56
Inspection of Water Pump
56
Replacement of Gear Oil
58
Inspection of Gear Case (for Leakage)
59
Inspection of Timing Belt
60
Replacement of Timing Belt
61
Installation of Timing Belt
63
Inspection of Spark Plugs
65
Inspection of Compression Pressure
66
Inspection and Adjustment of Valve Clearance
67
Throttle Cable Adjustment of Throttle Link
68
Inspection of Shift Lever Gear Operations
71
Inspection of PTT Unit Operation
73
Inspection of Gas Assistant Unit Operations
73
Inspection of PTT Fluid Quantity
74
Inspection of Idle Speed
75
Inspection of Ignition Timing
75
Inspection of Anodes
76
Replacement of Anodes
76
Inspection of Propeller
77
Inspection of Thermostat
77
Inspection of Cooling Water Passage
78
Flushing with Water
79
Inspection of Battery
81
Greasing Points
82
4 4 Fuel System (Fuel Injection)
83
Fuel System (Fuel Injection
83
ECU System
83
Special Tools
84
Piping Arrangement Diagram
85
Fuel Hose, Vent Hose, Breather Hose, Cooling Water Hose
85
Parts Layout
86
Fuel Pump, Fuel Rail, Vapor Separator
87
Intake Manifold
89
Magneto & ECU
90
Electric Parts
91
Intake Manifold
92
Electric Parts
92
ECU System
94
Sensors
95
Actuators
97
Control System (ECU)
98
(3) Fuel Injection Control 4-17
99
(2) Control System
99
Fuel Injection Timing
99
Fuel Injection Control
99
Starting Fuel Increase Correction
100
Acceleration Fuel Increase Correction
100
Deceleration Fuel Decrease Correction
100
Correction Based on Intake Air Temperature
100
Correction Based on Cylinder Cooling Water Temperature
100
(5) Control of Tachometer 4-18
101
(4) Control of Fuel Feed Pump (FFP) 4-18 7) Draining Fuel
101
Warning Buzzer and Lamp (LED), and Control of Engine Revolution Speed
101
Locations of Warning Buzzer and Lamp (LED)
101
Warning Notification, Abnormality and Action to be Taken
101
Ignition System
102
Ignition and Combustion Orders
103
Ignition Control
103
Ignition Timing
103
Ignition Timing Controls
103
Operations
103
Fuel Feed System
104
4-12 1) Fuel Pump (Low Pressure Mechanical Pump)4-23
105
Components of Fuel Feed System
105
Fuel Pump (Low Pressure Mechanical Pump)
105
Vapor Separator
105
Fuel Cooler
106
Fuel Regulator
106
Outline of Fuel Injection System
107
Air Intake System
107
Inspection Items
108
Inspection of Fuel Supply System Piping
108
Inspection of Filter
108
Inspection of Fuel Pump
110
Measuring Fuel Pressure
111
Inspection of Fuel Regulator
112
Draining Fuel
113
Disassembly of Vapor Separator
113
Inspection of Vapor Separator
114
Inspection of Idle Speed
115
Inspection of ISC (Idle Speed Control)
115
Reassembly of Vapor Separator
115
Power Unit
117
Special Tools
118
Parts Layout
119
Recoil Starter
120
Magneto & ECU
121
Electric Parts
122
Fuel Pump, Fuel Rail, Vapor Separator
124
Intake Manifold
127
Cam Shaft & Oil Pump
128
Cylinder Head
129
Intake Valve & Exhaust Valve
130
Cylinder
131
Piston & Crankshaft
132
Top Cowl
133
4-16 1) Air Intake System
108
Inspection Items
134
Inspection of Oil Pressure
135
Inspection of Valve Clearance
136
Removing Power Unit
138
Removing Timing Belt and Pulley
141
Inspection of Timing Belt
142
Installation of Pulley and Timing Belt
143
Removing Cylinder Head
146
Inspection of Valve Spring
148
Inspection of Valve
149
Inspection of Valve Seat
150
Correction of Valve Seat
151
Inspection of Rocker Arm and Rocker Arm Shaft
153
Inspection of Cam Shaft
154
Inspection of Cylinder Head
155
Inspection of Oil Pump
156
Installation of Valves
157
Installation of Cam Shaft
158
Installation of Oil Pump
159
Installation of Cylinder Head
160
Disassembly of Cylinder Block
161
Inspection of Piston Outer Diameter
162
Inspection of Piston Ring Side Clearance
163
Inspection of Piston Pins
164
Inspection of Crankshaft
165
Inspection of Crank Pin Oil Clearance
166
Inspection of Crank Shaft Main Journal Oil Clearance
167
Inner Diameter of Cylinder/Crank Case Bearing Holder (Inner Diameter Code)
168
Assembling Piston and Connecting Rod
169
Installation of Power Unit
173
Removing Recoil Starter
175
Inspection of Recoil Starter
176
Installation of Recoil Starter
177
6 Lower Unit
179
Special Tools
180
Parts Layout
182
Gear Case
182
Drive System & Water Pump
183
Shift
185
1 Special Tools6-2
182
Inspection Items
186
Draining Gear Oil
186
Removing Propeller
186
Removing Lower Unit
187
Disassembly of Water Pump
187
Inspection of Water Pump
188
Disassembly of Propeller Shaft Ass'y
189
Inspection of Propeller Shaft
189
Assembly of Propeller Shaft Ass'y
189
Disassembly of Propeller Shaft Housing
190
Inspection of Propeller Shaft Housing
191
Assembly of Propeller Shaft Housing
192
Removing Pump Case (Lower)
193
Inspection of Cam Rod and Clutch Cam
194
6-8
195
Inspection of Drive Shaft
195
Disassembly of Forward Gear (a Gear)
195
Inspection of Pinion Gear (B Gear) and Forward Gear (a Gear)
195
Assembly of Forward Gear (a Gear)
195
Assembly of Drive Shaft
196
Inspection of Gear Case
197
Assembly of Lower Unit
197
Installation of Pinion Gear (B Gear)
198
Settling Pinion Gear (B Gear) Height
199
Settling Forward Gear (a Gear) Backlash
202
Reassembly of Pinion Gear Nut (B Gear Nut)
205
Reassembly of Pump Case (Lower)
206
Assembly of Water Pump
206
Installation of Lower Unit
208
7 Bracket
211
Special Tools
212
PTT Wiring and Layout Diagram
213
Parts Layout
214
Swivel Bracket (Mechanical Tilt)
215
Clamp Bracket & Reverse Lock
216
Bracket, PTT & Gas Assistant
217
Power Trim & Tilt
219
Tiller Handle
220
Bottom Cowl
221
Shift
222
Inspection Items
224
Inspection of Throttle Cable
224
Installation of Tiller Handle
224
Adjustment of Co-Pilot Plate
225
Removing Drive Shaft Housing
226
Pulling out Upper Mount
227
Inspection of Oil Strainer
228
Installation of Drive Shaft Housing Ass'y
229
Removing Steering Shaft
230
Installing Steering Shaft
230
7-2
231
Removing Clamp Bracket (Mechanical Tilt Model)
231
Removing Clamp Bracket (PTT or Gas Assistant Model)
231
Installation of Clamp Bracket (Mechanical Tilt Model)
232
Installation of Clamp Bracket (PTT or Gas Assistant Model)
232
Installation of Clamp Bracket (Mechanical Tilt Model)
233
Removing PTT Unit/Gas Shock Absorber
234
Inspection of PTT Pump and Valves
235
Removing PTT Motor
235
Removing PTT Pump and Valves
235
Inspection of Tilt Cylinder
236
Removing Tilt Cylinder
236
Inspection of Valve
237
Installation of PTT Pump and Motor
237
Assembly of Tilt Cylinder
238
Air-Purging PTT Unit (Separated from Outboard Motor)
240
Installation of PTT Unit/Gas Shock Absorber
242
Air-Purging PTT Unit (Separated from Outboard Motor)
243
Air-Purging PTT Unit (Installed on the Outboard Motor)
243
Inspection of PTT Solenoid
244
Inspection of PTT Switch
245
8 Electrical System
247
Special Tools
248
Electrical Component Layout
249
Port Side View
249
Bow Side View
250
Starboard Side View
251
Top View
252
Tiller Handle Model
253
Parts Layout
254
Magneto & ECU
254
Electric Parts
255
Electric Parts
256
Starter Motor
257
Fuel Pump, Fuel Rail, Vapor Separator
258
Ignition System, Ignition Control System
260
Inspection of Ignition Sparks
260
Inspection of Plug Cap
260
Inspection of Ignition Coils
261
Inspection of Alternator
261
Inspection of Pulser Coil
262
Inspection of Oil Pressure Switch
262
Inspection of Water Temperature Sensor
263
Inspection of Neutral Switch (Tiller Handle Model)
263
Inspection of Start Switch (Tiller Handle Model)
263
Inspection of Stop Switch
264
Fuel Control System
265
Inspection of Injectors
265
Inspection of ISC Valve
265
Inspection of MAT (Manifold Temperature) Sensor
266
Inspection of Fuel Feed Pump (FFP)
266
Inspection of Throttle Position Sensor
266
Starting System
267
Inspection of Fuse
267
Inspection of Starter Solenoid
267
Disassembly of Starter Motor
267
Inspection of Starter Motor Pinion
268
Inspection of Armature
268
Inspection of Brushes
269
Inspection of Starter Motor Operation
269
Battery Charging System
270
Inspection of Alternator
270
Inspection of Rectifier
270
ECU Coupler
271
9 Troubleshooting O
273
Troubleshooting O K
273
Troubleshooting List
274
State 1 : Engine will Not Start or Is a Little Hard to Start.9-3
275
Power Unit
275
Starting System
275
Ignition System
277
Fuel System
279
Engine Revolution Speed Fall Off.engine Stalls
281
State 2 : Full Throttle Engine Revolution Speed Is Low.
282
Ignition System
282
Fuel System
283
Lubrication System
284
Cooling System
285
In Low Speed Range
286
State 3 :Engine Rotation Is Unstable or Hunting Occurs
287
Ignition System
287
Fuel System
288
State 1 PTT will Not Operate
289
PTT Unit
289
State 2 PTT Is Not Capable of Sustaining Outboard Motor
290
9-17
290
3AC Diagnosis
291
State 2 : PTT Is Not Capable of Sustaining Outboard Motor.9-18
291
Set up
291
Software Install
292
If Putting CD into CD Drive will Not Cause Installation Software to Start
293
Diagnosis File Information
293
Hardware Connection
294
Preparation
294
Position of ON/OFF Switch for Function Test and Running (Drop) Test
295
Operating Procedure
296
Start up
296
Menu Selection
296
Setting Communication (COM) Port
297
Monitoring ECU Data
298
Monitoring History and Failure Code Retrieval
299
Function Test
300
Running Test (Drop Test)
301
Air Purging from High Pressure Fuel Circuit
302
Exit Diagnostic
303
Explanation of Error Code
303
Accessories
305
Remote Control Components
306
Remote Control Model
306
Installation of Meters and Battery
309
Installation of Meters
309
Installation of Battery
309
Wiring Diagram of Remote and Control Meters
310
Operation
311
Warning Indication
311
Wiring Chart
313
Wiring Diagram
314
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TOHATSU MFS 25 Owner's Manual (45 pages)
Brand:
TOHATSU
| Category:
Outboard Motor
| Size: 2.49 MB
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